package com.hdu.point_offer;

import java.util.List;

public class lcr141 {

    public class ListNode {
        int val;
        ListNode next;

        ListNode() {
        }

        ListNode(int val) {
            this.val = val;
        }

        ListNode(int val, ListNode next) {
            this.val = val;
            this.next = next;
        }
    }

    class Solution {
        public ListNode trainningPlan(ListNode head) {
            if (head == null || head.next == null) return head;
            ListNode cur = trainningPlan(head.next);
            head.next.next = head;
            head.next = null;
            return cur;
        }
    }
}
